Dobbers, a powerful phychoactive drug, has many effects, which include, but are not limited to: Uncontrollable fits of laughter, general coordination loss; especially with balance, and increased appreciation of Starbucks, vision problems (may include walls not appearing, which can lead to collisions), and general giddiness. A Dobbers overdose can occur, and the symptons include laughter which reduces the victim to tears, and collapse onto the floor, writhing hysterically.